package com.lixiaoyao.reggie.service.impl;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.lixiaoyao.reggie.common.CustomException;
import com.lixiaoyao.reggie.dao.CategoryDao;
import com.lixiaoyao.reggie.entity.Category;
import com.lixiaoyao.reggie.entity.Dish;
import com.lixiaoyao.reggie.entity.Setmeal;
import com.lixiaoyao.reggie.service.CategoryService;
import com.lixiaoyao.reggie.service.DishService;
import com.lixiaoyao.reggie.service.SetmealService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

@Service
public class CategoryServiceImpl extends ServiceImpl<CategoryDao, Category> implements CategoryService {
    @Autowired
    private DishService dishService;
    @Autowired
    private SetmealService setmealService;
    @Override
    public void remove(Long id) {
        LambdaQueryWrapper<Dish> dishLambdaQueryWrapper = new LambdaQueryWrapper<>();
        dishLambdaQueryWrapper.eq(Dish::getCategoryId,id);
        int count1 = dishService.count(dishLambdaQueryWrapper);
        if(count1>0){
            //此分类已被菜品关联无法删除
            throw new CustomException("此分类已被菜品关联无法删除");

        }
        LambdaQueryWrapper<Setmeal> setmealLambdaQueryWrapper = new LambdaQueryWrapper<>();
        setmealLambdaQueryWrapper.eq(Setmeal::getCategoryId,id);
        int count2 = setmealService.count(setmealLambdaQueryWrapper);
        if(count2>0){
            //此分类已被套餐关联无法删除
            throw new CustomException("此分类已被套餐关联无法删除");
        }
            //this 是用来访问本类实例属性和方法的，它会先从本类中找，如果本类中找不到则在父类中找
        super.removeById(id);
    }
}
